CVE-2026-82989

published 2026-10-05 34 d ago modified 2026-10-06 33 d ago also EUVD-2026-92873

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

There is an input injection in vCast exposed network services in ViewSonic ViewBoard that allows a remote, unauthenticated attacker to inject arbitrary input into service endpoints via network-based HTTP requests to unauthenticated endpoints

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 33 d ago (2026-10-06)

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Viewsonic vCast

Classification

Weakness

CWE-147 Improper Neutralization of Input Terminators
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

CVE List CVE-2026-82989
NVD CVE-2026-82989

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary